Profile feature: Depreciate Addons option is enabled
When the Depreciate Addons option is enabled profile feature is on, the Depreciate Overhead & Profit option appears and is editable. To find Depreciate Overhead & Profit, navigate to Claim Info > Parameters > Depreciate Options in an open estimate.

This profile feature is enabled by default. If you'd like to deactivate this feature, follow the instructions in this article.